Mercury vs Brex
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Mercury gives fast-growing companies zero-fee banking, 1.5% cashback on every card purchase, up to $5M FDIC insurance, and an all-in-one dashboard — without the enterprise complexity or surprise fees.
A straightforward comparison of what each platform offers for growing businesses.
| Features | | |
|---|---|---|
| Account Setup | ||
| Online application (no branch visit) | ||
| Apply in under 10 minutes | ||
| Open without minimum deposit | ||
| No personal guarantee required | Varies by product | |
| Fees | ||
| Monthly service fees | $0 | $0–$12/mo |
| Minimum balance fees | $0 | |
| Overdraft fees | $0 | |
| Free same-day ACH | ||
| Free domestic wires (USD) | ||
| Free international wires (USD) | ||
| FDIC Insurance & Security | ||
| FDIC insurance coverage | Up to $5M | $250K |
| Multi-bank sweep network | ||
| Two-factor authentication | ||
| Cards & Rewards | ||
| Business credit cards | ||
| Cashback on credit spend | 1.5% uncapped on all spend | 1%–5% on select categories |
| No annual fee on credit card | ||
| No credit check required | ||
| Virtual cards | ||
| Financial Operations | ||
| Built-in expense management | ||
| Bill pay | ||
| Invoicing | ||
| Accounting software integrations | ||
| Treasury and cash management | Limited | |
| Reimbursements | ||
Mercury is purpose-built for startups and growing businesses that want modern banking without the overhead. While Brex has pivoted toward enterprise spend management, Mercury has doubled down on what founders actually need: fast account opening, zero fees, free wires, and a clean product experience. For teams that want banking and financial ops in one place — without enterprise pricing — Mercury is the clear choice.
"We've used traditional banks, but they were painfully outdated. We've tried other fintechs, but they had serious glitches and shaky answers. That's why we're with Mercury — and why we're here to stay."
Peer Richelsen
Co-founder and Chairman, Cal.com
Growing teams choose Mercury because it combines the reliability of a bank with the product quality of a modern fintech — at zero cost.
Mercury charges $0 in monthly maintenance fees, overdraft fees, or minimum balance requirements. Free domestic and international wire transfers mean your money moves without nickel-and-diming.
Mercury's partner bank sweep network provides up to $5M in FDIC insurance coverage — 20x the standard $250K — keeping your operating capital safer as your business grows.
Mercury's IO credit card earns 1.5% cashback on all spending, uncapped, with no category restrictions. No jumping through hoops to earn rewards on your biggest expenses.
Checking, savings, cards, bill pay, invoicing, expense management, and accounting integrations all live in one clean interface — no bolt-on modules or enterprise add-ons required.
Mercury was purpose-built for startups and high-growth companies. With 300K+ businesses and an NPS of 73 (more than double the industry average), the product quality speaks for itself.
Switching to Mercury takes four steps you can complete online in minutes. No branch visit, no lengthy onboarding call. Move at your own pace while both accounts run in parallel.
All you need is your EIN and personal ID — no need to visit a physical branch.
Use ACH, wires, Stripe, or another bank account to move money fast and securely.
Add users, issue cards, set up controls, bill pay, reimbursements, and sync your accounting software.
Redirect payroll, Stripe, PayPal, and all your other vendor payments at your own pace.
Mercury is a financial technology company, not a bank itself. Banking services are provided by partner banks Choice Financial Group and Column N.A., both Members FDIC. Your funds are held at these FDIC-insured institutions, giving you bank-grade protection with a modern product experience.
Both platforms serve startups, but with different focuses. Mercury is built around banking — checking, savings, cards, and financial operations in one place, all at $0 in fees. Brex has shifted its focus toward enterprise spend management and corporate cards, and has pulled back from serving smaller startups. For most early-stage and growth-stage companies, Mercury offers more relevant features at a lower cost.
Mercury supports a wide range of businesses — SaaS, ecommerce, agencies, consultants, VC-backed startups, and more. Whether you're a solo founder, managing a growing team, or overseeing multiple entities, Mercury is designed to grow with you.
Yes. You can open a Mercury account without closing your existing accounts. Mercury lets you link external bank accounts via Plaid, so you can move money between banks via ACH and test the platform before fully committing to switching.
The application takes about 10 minutes online. Once approved, you can fund your account immediately via ACH or wire transfer. Most businesses update their payment methods — payroll, Stripe, vendor payments — over a few days at their own pace, with zero downtime.
Yes. Mercury requires HTTPS on all pages, uses time-based one-time passwords for two-factor authentication (never SMS), encrypts the database and all uploaded documents, and conducts annual third-party penetration testing. Card numbers are never stored.
Say goodbye to bad design and hidden fees. Open a Mercury account in minutes.
Mercury is a fintech company, not an FDIC-insured bank. Banking services provided through Choice Financial Group and Column N.A., Members FDIC.
